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Effect of Androsterone after Pilocarpine-induced Status Epilepticus in Mice

 Inja Cho  ;  Yang-Je Cho  ;  Hyun-Woo Kim  ;  Kyung Heo  ;  Byung-In Lee  ;  Won-Joo Kim 
 Journal of Epilepsy Research, Vol.4(1) : 7-13, 2014 
Journal Title
Journal of Epilepsy Research
Issue Date
Androsterone ; Calbindin-D28k ; Hippocampus ; Neurosteroid ; Seizure
BACKGROUND AND PURPOSE: Neurosteroids exert their antiepileptic effects via GABAA and NMDA receptors. Another cell death mechanism is excessive Ca(2+) influx into cells. Calbindin-D28k (CB) is a protein that modulates intracellular Ca(2+) in the nervous system. We evaluated whether androsterone up-regulates the expression of CB and has a neuroprotective effect by controlling Ca(2+) after pilocarpine-induced status epilepticus (SE) in mice. METHODS: SE was induced in ICR mice by injection of pilocarpine. Two hours after SE, mice were treated intraperitoneally (i.p.) with androsterone (100-200 mg/kg) or vehicle, and compared with other control groups. Two days after injection, immunohistochemical staining for CB was performed using a hippocampal slice from each mice group. We also used cresyl violet staining to compare changes in hippocampal structures. RESULTS: Two days after pilocarpine-induced SE, androsterone increased the expression of CB in the hippocampus compared with control SE mice. The number of CB-positive cells was 1±0.4 cells/mm(3) in pilocarpine-only group, 14±1.1 cells/mm(3) in pilocarpine plus androsterone 100 mg group and 29±2.5 cells/mm(3) in pilocarpine plus androsterone 200 mg group (p<0.001). CONCLUSIONS: These results suggest that the neuroprotective effect of androsterone after pilocarpine- induced SE may be mediated by an increased expression of CB.
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1. College of Medicine (의과대학) > Research Institute (부설연구소) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Neurology (신경과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
Yonsei Authors
Kim, Won Joo(김원주) ORCID logo https://orcid.org/0000-0002-5850-010X
Kim, Hyun Woo(김현우)
Lee, Byung In(이병인)
Cho, Yang Je(조양제)
Cho, Inja(조인자)
Heo, Kyoung(허경)
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